kfconcept
There are two types of FD mounts
FD/FL Breech-Mount (with a silver ring, you need to rotate the silver ring when attachment and removal), breech-lock mounts are identified by the silver ring
New-FD Bayonet Mount, bayonet mounts are identified by a red dot next to the lens release button
Here are the steps to install breech-mount version
Operating the adapter
Canon W E1 Adapter Fujifilm X E1 Lens Mount Fuji X E1 Lens Adapter Commlite Active Lens Adapter Commlite Cm-enf-e 1 Af Lens Adapter Commlite Comix Lens Adapter Nf-e1 Lens Mount Adapter Fuji X E1 Lens Mount Commlite Cm-enf-e1 Pro Nikon F Mount Nikon To Pl Mount Conversion
Hoya Uv Lens Filter 77mm Raspberry Pi Camera Lens Ir Filter Cpl Circular Polarizer Lens Filter Nikon Mirrorless With F Mount Sigma 60-600mm Sony E Mount Sony E Mount News Contax Lens Adapter Sony Gopro Hero5 Lens Mount Praktica Super Tl1000 Lens Mount Ka Mount Lenses On Pentax P5